85-86 Spark Plug Set - AC Delco With Cast Iron Heads Set Of 8

Original equipment spark plugs are designed to totally complement every other component in your factory ignition system. The resistance in an AC spark plug is perfectly matched to your ignition system so that radio interference is minimal. You'll realize optimum performance when AC Delco plugs are

Original equipment spark plugs are designed to totally complement every other component in your factory ignition system. The resistance in an AC spark plug is perfectly matched to your ignition system so that radio interference is minimal. You'll realize optimum performance when AC Delco plugs are used in an AC Delco ignition system.

Electrical components such as spark plugs are non-returnable parts.

Always refer to a factory service manual when diagnosing engine service problems. You can damage electrical components if the proper procedures are not followed. Be sure you are replacing the correct part.